The Tower of Hanoi hole will go live in approximately 8 hours. Why not try and solve it ahead of time?
τ in Python in chars. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 150th hellwue 436 133 23ms 17 Feb 2023 152nd aksyristos 433 134 210ms 30 Oct 2022 152nd hiichbindermax 433 134 20ms 14 Feb 2025 154th relet 430 135 14ms 9 Aug 2018 154th jmhowl 430 135 61ms 3 Jun 2020 154th cooljoseph1 430 135 16ms 24 Dec 2023 154th BenjaminHGong 430 135 68ms 23 May 2025 158th chneau 426 136 139ms 25 Apr 2020 158th ehulinsky 🇺🇸 426 136 15ms 10 Nov 2021 158th eiburns 426 136 38ms 26 Sep 2023 161st robin-scragg 423 137 13ms 17 Oct 2025 162nd dzhang314 420 138 17ms 14 Aug 2019 162nd jfallon1997 420 138 15ms 14 May 2024 164th jameslindesay 417 139 296ms 25 Feb 2021 164th stordev 417 139 38ms 26 Feb 2021 166th cbondurant 414 140 15ms 7 May 2021 166th thehylian 414 140 24ms 17 Sep 2023 168th klixel 🇨🇦 411 141 30ms 17 Oct 2024 168th Code-Coder-coder 411 141 145ms 13 Oct 2025 170th kenny14231 408 142 1,295ms 5 Aug 2022 170th dirckvdende 408 142 17ms 2 Aug 2025 172nd sleepyStick 406 143 15ms 7 Dec 2021 172nd asadullayev 406 143 36ms 8 Jul 2022 172nd suwat513 406 143 36ms 16 Jun 2023 175th mueller14003 403 144 25ms 19 Apr 2018 175th Starwort 🇬🇧 403 144 16ms 28 May 2019 175th dzshn 403 144 30ms 18 Aug 2021 175th smokestacklightnin 🇺🇸 403 144 27ms 23 Feb 2024 179th ly0va 400 145 15ms 3 Jan 2019 179th michelebastione 🇮🇹 400 145 28ms 7 Jul 2019 179th rollershutter 400 145 33ms 26 Sep 2025 182nd guliyevemil1 🇦🇿 397 146 15ms 17 Apr 2020 182nd magnickolas 397 146 23ms 19 Nov 2020 182nd m42km 397 146 9ms 10 Oct 2023 185th MaxElf999 395 147 15ms 27 Sep 2022 186th jakobkordez 🇸🇮 392 148 52ms 23 Oct 2022 186th cthierfelder 🇲🇨 392 148 163ms 4 Sep 2025 188th Mabeloid 🇳🇴 389 149 25ms 7 Sep 2024 188th blaztoma 🇱🇹 389 149 28ms 4 Oct 2025 190th bkshrader 387 150 310ms 30 Dec 2018 191st skps2010 384 151 30ms 12 Jan 2019 191st sultan 384 151 28ms 9 Mar 2024 193rd Ralac07 🇦🇺 379 153 33ms 4 Jul 2024 193rd gthayden23 379 153 33ms 4 Oct 2024 195th trist224 🇫🇷 377 154 16ms 29 Nov 2022 195th SniperSmiley 🇺🇸 377 154 41ms 24 Dec 2022 197th boxjelly 372 156 68ms 10 Jan 2021 197th nullie 372 156 560ms 18 Jun 2022 199th gigaprofisi 🇺🇸 369 157 27ms 2 Mar 2025 200th jacobly0 🇺🇸 367 158 9ms 8 Oct 2023 200th christensendaniel 367 158 31ms 13 May 2024 202nd DABANANAMAN120 365 159 58ms 28 Jun 2025 203rd itiievskyi 🇺🇦 363 160 34ms 6 Aug 2020 203rd 0dyse 363 160 993ms 23 Apr 2025 205th PyPylia 🇦🇺 356 163 28ms 7 Aug 2020 205th cefqrn 356 163 15ms 13 Apr 2025 207th ashwinvis 354 164 36ms 18 Apr 2020 207th brobbins2001 354 164 33ms 17 Oct 2022 207th codewrite 🇬🇧 354 164 15ms 28 Jun 2025 210th dymowski 352 165 13ms 3 May 2020 211th jtaxen 349 166 14ms 26 Mar 2024 212th Pena86 347 167 9ms 6 Jan 2022 213th msrawson 345 168 14ms 29 Aug 2018 214th LiamKrenn 343 169 37ms 21 Jul 2022 214th dillon-duncando 343 169 125ms 4 Oct 2022 216th epic-programmer-guy 339 171 38ms 17 Dec 2023 217th msbranicky 337 172 40ms 5 Jul 2023 217th LHLaurini 🇧🇷 337 172 141ms 18 Jun 2024 217th yahelihol 337 172 19ms 10 Jun 2025 217th Flekay 🇩🇪 337 172 14ms 10 Jul 2025 221st TJK-S 333 174 33ms 23 Oct 2025 222nd martinnorling 🇸🇪 330 176 15ms 29 Mar 2022 223rd roguh 🇬🇹 328 177 32ms 22 Jan 2024 224th AkashTandon167 324 179 153ms 6 Nov 2021 225th alfonsoalves 320 181 38ms 26 Feb 2024 First Prev 151–225 of 326 Next Last
